text: #ifndef RESAMPLE_H
  #define RESAMPLE_H
  
  #include "vector.h"
  
  typedef struct {
      unsigned char *tf;
      int nc, nr;   
  } rs_ctx;
  
  rs_ctx *rs_init(int, int);
  void rs_resample(rs_ctx *, unsigned char *, vc *);
  void rs_free(rs_ctx *);
  
  #endif
  